.DMMX File Extension
File TypeiMindQ XML Map Bundle
What is a DMMX file?
Mind map file created by iMindQ, a brainstorming and mind mapping program; stores a iMindQ diagram in an XML format compressed with .ZIP compression; often used for bundling iMindQ mind maps (.DMM files) and sending them over email.
DMMX files contain a compressed folder that has an XML file named document.xml and a .PNG file named preview.png that contains an image of the mind map.